Bought two of these 18 subs to give them a try. I ve been very dedicated for over twenty years to other brands. I thought i would buy some middle of the road subs from soar and see what happens. Well let me tell ya i m shocked. Built a 4th order band pass box and holy crap. I m running one rockford 1200. 1 at 1 ohm per sub. Box is tuned at rear 29 hz front at 50 hz needless to say they slam hard and have been for months now. I will have to upgrade my alternator and add batteries but considering i m still building it out and have a lot left it does hit hard. Metered at 153db.

I m running 6 of these along with 6 15s in my 26 000 watt theater and i simply can not speak to how profound these drivers are they simply gobble up the wattage and deliver bass that many have described as insane these aren t just good for the price they re good full stop with 6 of these assisting i m able to drive a 1200 square foot theater to over 100 decibel at 10 hz before you say 100d b is nothing find a 1200 square foot space stand 14 feet away from your closest sub and measure a 10 hz signal yes these are that good i m blown away

So this is my first build ever. I did all the work myself. Took me about 2 months. Did a custom install with the skar rp1500 with a led fan in the side compartment of my tahoe. Built a 10 cf box with baltic birch triple baffle my own design box interior with birch and poplar. Ebony stain. Cut out a skar logo out of plywood sanded and painted. Clear coated. I did all this with a jig saw and sawzall. Installed 2 18 sdr 4ohm subs. Wired to 1 ohm. Installed a 300amp altenator along with the big 3 0 gauge upgrade. My set up hits so hard it makes my chest hurt. My friends can hear me coming a few blocks away. Im definitely impressed and will be a skar customer for life.

I got my box looking good like putting rims on a ugly car my 18 skyar subwoofer makes my box look sexy

No flexn on the water added a set of skar tx69. Going to put 1 8 sub as well

I used this woofer to replace a round vintage kicker 15 solobaric 4 ohm sub woofer. Solobarics have small sealed enclosures 1. 5 c. F. . The solobaric has nice deep bass depending upon music playing but most of the time the bass is almost nonexistent due to lack of port and small enclosure. I believe it is rated at 750 watts rms. I have never really been happy with any sealed subwoofers especially for my vehicles. They seem to lack the punch that i can feel that adds to the music can and lack the efficiency that i desire. This speaker has some type of corrugation on the paper on back side probably adding to the stiffness of it. It also has a large amount of foam making the surface area much smaller probably around 14 vs 18 but many subs do the same thing. Even upon full compression of the driver the foam does not appear to be stressed or even close to its stretching capabilities. The magnet and assembly is not overly large or heavy nor can my alpine 600 rms 2 ohms really move this speaker very much with all the surround. However with the box combination it does very well and is much more efficient than my 15 sub. It is all that i need for an upgrade from stock. I don t need a competition system that has many have thousands of watts of power with 18 drivers and no room for storage thus depleting the reason for a truck. Also so much bass just invites more rattles and noise thus defeating the purpose of high quality sound. I have a 2008 chevy avalanche and want some kind of balance of usability vs the best sound i can get. The original bose system with hidden sub was pretty awful. I am happy with this speaker it added the finishing touch but i wouldn t mind adding about 200 more watts per channel to this sub. Its crazy how much power you really need in an average car audio system. My last vehicle had 4 amps and way too many wires and speakers. Also with too many amps come too much power consumption that can be tough on alternators ect. They now have class d amps which they did not use back then and are much more efficient. I think this speaker will add the finishing touch on my excruciating installation job. Took 3 months

Great sub so far impressed with how loud and low it gets. Box size is 5. 4 cf in a trans am lol yes trans am amp is neo d b drive 1500. 1

Extremely satisfied with these subs. You won t find a better quality sub for the price.

Made myself a sub for my surround sound system it s just ridiculous

Purchased a complete 18 setup w box speaker and amp. And for the price it was the best for the quality it was even better. I also purchases a 12 kit for my nephew. Awesome. After close to a year i believe the speaker started to fail. So i sent it back and they replaced it. Cost to send was but cheaper then a new speaker. The customer service is the best hands down. I decided to buy another speaker and build a box. Came out sick i only have the 800. 1 d pushing both and it s clearly not enough power but it s deeeeep. I have a 1500. 1 d coming and that should do the trick. Thank you guys for a great product.

Replace 4 12 s on same power and its like night and day.

Sound great so far. Time will tell now how they hold up. Very happy with them at this point

Bought 2 18s sdr series. Breakin em in one by one on a 1200 watt stereo system.

Ordered sdr 18 and rp800. 1 and got delivered in 2 days. Made a box and got everything wired and it sounds crazy for just a 600 watt sub. First skar purchase will not be the last god bless u skar

Haven t pushed it to it s potential but it sounds deep. . . . . . . I made this in 45min and the enclosure flexed too much to bring out the sound. . . I have more pics that show the process.

This is more of an edit to a previous review but it wouldn t let me edit. Finally got around to getting about 3 4 finished with the infinite baffle setup in my prelude and even with all the gaps the still need sealed. . . . . It bangs

Put a pair of the sdr 18 d2 s wired down to 1 ohm in a spec d box tunes to 33 hertz and they have my yukon shaking apart on 1500w. For the price you can t go wrong and won t be disappointed.

This sub is sick running it in a custom made 34hz ported box with a memphis 1ohm mono block 1200w amp and it hits so hard. . . Great sub if you are on a budget. . . I can t wait to upgrade to the zvx 18 v2 18

I put two of these in my car in infinite baffle and they hit hard i can play them down to 19 hrz as well on 550rms total. 120db all across and people can hear you across a large intersection if that s your thing. What i really love is when they barely play and appear not to move but sound good tonality wise. They responded respectable on fast kick drums to could be a bit faster but 18 s but don t get me wrong as most people won t notice. Love skar price to performance is off the charts. I just need to replace my 6x9s with 8 mids and i ll be very happy with skar products all the way around

Part of my reason for choosing skar sdr s over ct sounds tropo s was on soars website it says under voice coil copper but on the retail box they came shipped in it states ccaw copper clad aluminum wire. That is not copper the other part for choosing skar was the 2yr vs 90 day warranty. Hopefully the ccaw will hold up without toasting. The subs do look amazing and we ll built for the money. I gave 3 stars as a neutral review until i get the box done and fired up.